反应热压法制备TiB_2/AlN复合陶瓷  

REACTIVE HOT-PRESSING TiB_2/AIN CERAMIC COMPOSITES

作　　者：曾照强[1] 陈英杰[1] 吴崇隽[1] 胡晓清[1] 苗赫濯[1] 

机构地区：[1]清华大学材料科学与工程系,北京100084

出　　处：《金属学报》1999年第6期659-662,共4页Acta Metallurgica Sinica

基　　金：清华大学校内研究基金!96-10

摘　　要：本文报道了以TiN、Al和BN为原料通过反应热压法制备TiB2／AlN复合陶瓷的实验结果，对该反应的热力学过程，产物的物相、微观结构与形貌进行了研究与讨论．结果表明，原料在800℃左右开始反应，随着温度的升高反应越完全，1700℃左右完全反应．通过SEM观察发现，生成的TiB2／AlN复合陶瓷具有很高的致密度，晶粒尺寸细小且分布均匀，通过反应得到的AlN晶粒具有大量的层状和李晶结构．In this paper using TiN, Al and BN as raw materials, reactive hot presing method wasproposed to produce TiB2/AlN ceramic composites. The thermodynamic processing of the reaction, thephase, microstructure and morphology of the samples were studied. The results showed that the rawmaterials begin to react at about 800℃, with raising temperature the raw materials reacted more andmore completely and they could react completely at about 1700 ℃. The sample has high density andsmall gain size, and the acquired phases are distributed uniformly. The AlN phases in the sample hasplenty of laminated and twin structures.

关 键 词：反应热压 二硼化钛 氮化铝 复合陶瓷 

分 类 号：TQ174.758[化学工程—陶瓷工业]